Tanhum ben Joseph of Jerusalem, also known as Tanḥum ha-Yerushalmi (1220–1291), was a 13th-century Hebrew lexicographer and biblical exegete who compiled several Hebrew works, the most notable of which being a lexicon on Mishnaic words entitled Murshid al-kāfī ("The Sufficient Guide"). Tanhum's learning in Jewish studies was so pervasive that he was coined the name "the Abraham ibn Ezra of the Levant."